Great Lakes Forecast
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FZUS63 KLOT 160145
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
845 PM CDT Tue May 15 2018

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON Lake Michigan.

Waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.SYNOPSIS...High pressure of 30.2 inches from James Bay to the
western Great Lakes will shift into Quebec and eastern Great Lakes
tonight. Low pressure of 29.6 inches over Manitoba will move to
Ontario tonight and then into Quebec on Wednesday. A slightly
stronger high of 30.3 inches will then shift over the region
Wednesday night through Thursday night, while a trough develops
across the central and northern Plains through the end of the work
week.

LMZ261-362-364-366-563-565-567-868-160930-
Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and north of a line from Charlevoix MI to South
Fox Island 5 NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to
Mid Lake-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to
Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid
Lake-
845 PM CDT Tue May 15 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Northeast winds 10 to 20 kt veering to
southwest. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt. Waves 2 to 4 ft.
.WEDNESDAY NIGHT...Southwest winds 10 to 20 kt becoming south
10 to 15 kt late in the evening, then veering to north 5 to 10 kt
after midnight becoming northeast 10 to 15 kt late. Waves 2 to
4 ft subsiding to 1 to 3 ft.
.THURSDAY...Northeast winds 10 to 15 kt increasing to 10 to
20 kt. Waves 2 to 4 ft.
.THURSDAY NIGHT...East winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 2 to 4 ft.
.FRIDAY...East winds 10 to 15 kt becoming northeast 10 to 20 kt.
Waves 1 to 3 ft.
.FRIDAY NIGHT...East winds 10 to 20 kt becoming southeast. Waves
1 to 3 ft.
.SATURDAY...South winds 10 to 15 kt. Waves 1 to 3 ft.
.SUNDAY...North winds 15 to 25 kt. Waves 4 to 6 ft occasionally
to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-160930-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5 NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5 NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM
offshore to Mid Lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid
Lake-
Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to
Mid Lake-
845 PM CDT Tue May 15 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...North winds 10 to 20 kt veering to east 10 to
15 kt. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.WEDNESDAY...East winds 5 to 10 kt becoming variable. Waves 1 to
3 ft.
.WEDNESDAY NIGHT...Variable winds 5 to 10 kt becoming East 10 to
15 kt...then backing to north. Waves 1 to 2 ft.
.THURSDAY...Northeast winds 5 to 10 kt becoming north. Waves 1 to
2 ft.
.THURSDAY NIGHT...Northeast winds 10 to 20 kt becoming east.
Waves 1 to 3 ft.
.FRIDAY...East winds 10 to 15 kt becoming northeast. Waves 1 to
3 ft.
.FRIDAY NIGHT...East winds 10 to 20 kt. Waves 1 to 3 ft.
.SATURDAY...Southeast winds 10 to 15 kt becoming south. Waves
1 to 2 ft.
.SUNDAY...North winds 15 to 25 kt. Chance of rain showers and
thunderstorms. Waves 4 to 6 ft occasionally to 8 ft.

$$
LMZ761-160930-
MAFOR 1603/
MICHIGAN NORTH 10120 11210 11410 15520. Waves 2 to 4 ft subsiding
to 1 to 3 ft overnight. Waves 2 to 4 ft Wednesday and Wednesday
evening.

MICHIGAN SOUTH 11820 11220 11210 11200 14900. Waves 3 to 5 ft
subsiding to 1 to 3 ft overnight. Waves 1 to 3 ft Wednesday and
Wednesday evening.

$$

BMD

Experimental modernized open lake forecast is available online at
weather.gov/lot/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes



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